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Method for preparing antibacterial filter material

A technology for filtering material and slurry, applied in the field of air purification, can solve the problems of high energy consumption, the product cannot be completely biodegraded, etc., and achieve the effect of low density, low production cost and good filtering effect.

Active Publication Date: 2017-05-10
烟台通润化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this process uses steam explosion raw materials and high-pressure treatment of mechanical pressing, which has relatively high energy consumption, and the binder uses polyurethane resin, which makes the product not completely biodegradable

Method used

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  • Method for preparing antibacterial filter material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 11

[0036] Cut 100 parts of pre-weighed corn stalks into lengths of 20-50 mm with a lawn cutter, add them to the reaction kettle, add 1 part of trisodium citrate, 0.5 parts of silver nitrate and 9900 parts of water, and start the agitator to adjust the speed to 200 r / min, the temperature was raised to 80 °C, and the temperature was kept for 2 hours to obtain plant fibers loaded with nano-silver.

[0037] Add 100 parts of plant fibers loaded with nano-silver, 30 parts of sodium dodecylbenzenesulfonate, 19670 parts of water and 200 parts of commercial slurry into the reactor, start the agitator to adjust the speed to 1000 r / min, and stir for 10 min After that, the slurry mixture is foamy (that is, foam fibers, such as figure 1 as shown; figure 1 As shown;), the air content in the foam fiber reaches 10% (volume fraction, the same below), take 200 parts of the foam fiber into the mold, use vacuum filtration (0.05 Mpa) to dehydrate and dry, and take it out after 5 minutes (this , the...

Embodiment 12

[0039] 100 parts of plant fibers loaded with nano-silver prepared in Example 1, 30 parts of sodium dodecylbenzenesulfonate, 199670 parts of water and 200 parts of commercial pulp that have been decomposed are added to the reactor, and the agitator is started to adjust the rotating speed to 1000 r / min, after stirring for 10 min, the slurry mixture is foamy (that is, foam fibers, such as figure 1 as shown; figure 1 As shown;), the air content in the foam fiber reaches 10%, take 200 parts of the foam fiber into the mold, use vacuum filtration (0.05 Mpa) to dehydrate and dry, take it out after 5 min, and dry it at room temperature for 24 h to obtain antibacterial Finished filter material. The measured density of the product is 0.01g / cm 3 , the tensile index is 8Nm / g, the degradation rate is >99%, the filtration efficiency for 0.1 µm-1 µm dust is over 85%, and the antibacterial rate for Staphylococcus aureus and Escherichia coli is over 85%.

Embodiment 13

[0041] 100 parts of plant fibers loaded with nano silver prepared in Example 1, 30 parts of sodium dodecylbenzenesulfonate, 59700 parts of water and 200 parts of commercial pulp that have been decomposed are added to the reactor, and the agitator is started to adjust the rotating speed to 1000 r / min, after stirring for 10 min, the slurry mixture is foamy (that is, foam fibers, such as figure 1 as shown; figure 1 As shown;), the air content in the foam fiber reaches 10%, take 200 parts of the foam fiber into the mold, use vacuum filtration (0.05 Mpa) to dehydrate and dry, take it out after 5 min, and dry it at room temperature for 24 h to obtain antibacterial Finished filter material. The measured density of the product is 0.02 g / cm 3 , the tensile index is 8.3 Nm / g, the degradation rate is >99%, the filtration efficiency for 0.1 µm-1 µm dust is over 85%, and the antibacterial rate for Staphylococcus aureus and Escherichia coli is over 85%.

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Abstract

The invention relates to a method for preparing an antibacterial filter material by utilizing biomass resources, and belongs to the technical field of air purification. The method provided by the invention comprises the following steps: mixing a surfactant, plant fibers and water to obtain mixed slurry; stirring the mixed slurry until the mixed slurry is foamy, thereby obtaining foam fibers; performing vacuum suction filtration on the foam fibers until a water line is not observed by naked eyes; and drying until moisture content is 10wt% or lower. According to the method, the biomass resources such as crop straw and market pulp which are existed in nature in large numbers are taken as main raw materials, and a novel biomass antibacterial filter material is prepared through a normal-temperature low-pressure mechanical stirring method; a raw material source is wide, and the raw materials can be naturally degraded and regenerated; and the preparation method is simple, is not high in equipment requirement, is relatively low in production cost, is good in product filter effect, is strong in bacteriostatic ability, has excellent characteristics of resisting impact and shock, absorbing noises and preventing moisture, insulating, preserving heat and the like, can be used for respirators, air purifiers, filter elements, and has a good market prospect.

Description

technical field [0001] The invention relates to a method for preparing antibacterial filter materials by using biomass resources, and belongs to the technical field of air purification. Background technique [0002] Since the reform and opening up, although the extensive economic growth mode based on resource consumption has enabled my country's economy to develop rapidly, at the same time various pollution problems have emerged one after another, among which air pollution has become a major problem of environmental pollution today. Especially in recent years, haze and photochemical smog with particulate matter as the main pollutant occur frequently, and the air pollution presents the characteristics of a new type of air composite pollution in which soot and motor vehicle pollution coexist. In addition, all kinds of harmful bacteria in the air are ubiquitous. They reproduce quickly, have strong survivability, and spread widely. Many highly contagious and seriously harmful e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/04A01N59/16A01P1/00
CPCA01N59/16B01D39/04B01D2239/0442B01D2239/10
Inventor 李国栋于得海刘温霞王慧丽宋兆萍
Owner 烟台通润化工科技有限公司
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